<template>
  <div class="xtx-infinite-loading" ref="container">
    <div class="loading" v-if="loading">
      <span class="img"></span>
      <span class="text">正在加载...</span>
    </div>
    <div class="none" v-if="finished">
      <span class="img"></span>
      <span class="text">亲，没有更多了</span>
    </div>
  </div>
</template>

<script>
import { ref } from 'vue'
import { useIntersectionObserver } from '@vueuse/core'
export default {
  name: 'XtxInfiniteLoading',
  props: {
    loading: {
      type: Boolean,
      default: false
    },
    finished: {
      type: Boolean,
      default: false
    }
  },
  setup (props, { emit }) {
    const container = ref(null)
    useIntersectionObserver(container, ([{ isIntersecting }]) => {
      // 触发加载事件
      if (!props.loading && !props.finished) {
        emit('infinite')
      };
    }, { threshold: 0 })
    return { container }
  }
}
</script>

<style scoped lang='less'>
.xtx-infinite-loading{
    .loading{
         display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    .img{
        width: 50px;
        height: 50px;
        background: url('../../assets/images/load.gif')no-repeat center/contain;
    }
    .text{
           color: #999;
      font-size: 16px;
    }
    }
    .none{
         display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    .img{
         width: 200px;
      height: 134px;
      background: url(../../assets/images/none.png) no-repeat center / contain;
    }
    .text{
        color: #999;
      font-size: 16px;
    }
    }
}
</style>
